import java.util.HashMap;

/*
 *@Student 张策
 */
public class Main {
    public static void main(String[] args) {
        HashMap map=new HashMap();
        for (int i=1;i<13;i++) {
            map.put(new A(i),"zc");
        }
    }
}
class A{
    int a;

    public A(int a) {
        this.a = a;
    }

    @Override
    public int hashCode() {
        return 10;
    }
}